Bank A offers safe deposit services in a vault area that contains a door too narrow for wheelchair passage. The bank cannot widen the door because of the vault construction. Therefore, when a customer in a wheelchair needs access to a safe deposit box the customer cannot enter the vault. The bank provides viewing rooms for all safe deposit customers, and one of these rooms has a door wide enough for a disabled customer to enter. Which of the following must the bank do to provide safe deposit box service to wheelchair customers?